A: You can reply with:

We’re working on this and plan to move Magicfit to its own domain soon. Totally agree that a standalone domain will make the product feel more trustworthy and polished. Thanks for pointing it out.

A slightly warmer version:

Thanks for the feedback, we agree. We’re planning to move Magicfit to its own domain soon, which should make the product feel more trustworthy and independent. Really appreciate you calling this out.